Improvement in glass-molds and methods of removing articles therefrom



G. K. BRYCE. Glass Mold andMe'thod of Removing Articles Therefrom. No.214,879. Patented April 29,1879.

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Witnesses: Charles K .Brgce, %flm W W 2 W Aliorney.

UNITED STATES PATENT OFFICE.

CHARLES K. BRYCE, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN GLASS-MOLDS AND METHODS OF REMOVING ARTICLES THEREFROM.

Specification forming part of Letters Patent No. 214,879, dated April29, 1879; application filed March 26, 1879.

To all whom it may concern.-

Be it known that 1, CHARLES K. BRYCE, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Glass-Molds and Methods of Removing ArticlesTherefrom of which the following is a specification.

This invention relates to an improved method and apparatus for removingarticles of glassware from the molds in which they are formed.

Heretofore in constructing such articles in that class of moldstechnically known as drop-molds it has been necessary to remove themolds from. the press and invert them in order to release the articles.This operation requires time, and in the case of large articles is verylaborious to the pressman;

The object of my invention is to obviate these objections, and provide ameans for releasing .the articles from the molds by mechanism directlyunder control of the operator, whereby by a positive motion saidarticles can be raised .vertically from the molds in a position to beremoved by means of a suitable implement.

To this end the invention consists, first, in a mold having an apertureand arccess below, in which is located a plunger provided with ashoulder at its lower end, adapted to be operated by a plunger extendingthrough the bed of the press, by means of mechanism under direct controlof the pressman, to release the article from the mold, so that it can beremoved by means of a suitable implement, as more fully hereinafterspecified; second, in the combination, with the bed of the press, of avertical plunger, secured to alever fulcrumed in a hanger below, andadapted to be elevated by means of said lever when operated by thepressman to elevate the plunger in the mold and release the articletherefrom, as more fully hereinafter specified; third, in thecombination, with the vertical plunger extending through the bed of thepress and the lever by which said plunger is actuated, of a strap andstirrup, whereby the lever may be operated by the foot of the pressmanto elevate the plunger, and raise the plunger in the mold to release thearticle therefrom, as more fully hereinafter set forth; fourth, incombination with the plunger extending through the bed-plate of thepress and the lever by which it is actuated,

a counterpoise for depressing the lever and plunger, as and for thepurposes more fully hereinafter set forth fifth, in the combination,with the plunger extending through the bed of the press, of a leverlocated below the bed wand connected with said plunger, and providedwith a handle having a strap and stirrup or treadle, whereby the levermay be operated by hand or foot power to elevate the plunger and releasethe article from the mold, as more fully hereinafter specified.

In the drawings, Figure 1 represents a front elevation of a pressforforming articles of glassware, showing my improvements. Fig. 2represents a detached sectional view, showing the mold and dischargingmechanism in position to receive the glass; and Fig. 3 represents asimilar view, with the parts in position to elevate the article todischarge the same. Fig. 4 represents a view of the molddetached.

' The letter A indicates the frame of the press, and B the bed, whichare of the usual construction. Through the bed of the press, directlyunder the seat which the mold occupies when in position under thefollower C, is formed an aperture, D, in which is located a verticalplunger, E, the lower end of which is slotted, through which slotextends a lever, F, to which the plunger is secured by means of a bolt,G. The said lever is fulcrumed between hangers H,- secured to the underside of the bed of the press. One end of the lever is provided with acounterpoise, I, which serves to hold said lever and the plunger in anormal position. The other end of the said lever extends outwardly, andto it is secured a strap, K, having a stirrup, L, or treadle at itslower end, the outer end of the lever being under convenient control ofthe hand of the pressman, and the stirrup or treadle serving to enablehim to operate said lever by means of his foot, if deemed preferable. I

The letter Mrepresents the mold, which may be of suitable constructionfor the formation of articles of any shape or design. The said mold isformed with a recess, N, on its lower side, and with an aperture, 0,extending vertically through it. In said aperture and recess is secureda plunger, follower, or bottom plate, 1?, having a shoulder, P, at itslower end, the said plunger being adapted to be shifted vertically inthe aperture by a positive motion imparted to the plunger E and itsoperative mechanism, in order to elevate the articleabove the mold, sothat it can be removed by means of a suitable instrument withoutinverting the said mold. The shoulder on the lower end of the plungerbeing confined in the recess in the under side of the mold limits itsmotion, so that it will not displace the article to such an extent as tothrow it entirely from the mold.

It is evident that the recess in the bottom of the mold may be omitted,and other means may be employed for limiting the movement of theplungeras, for instance, by forming a recess in the upper face of thebed of the press, in which the shoulder on the plunger may be confined;and, also, that other mechanism besides that describedmay be employedfor elevating the plunger passing through the bed of the apparatuswithout departing from my invention. Hence I do not limit myself to theprecise details for performing these functions.

The operation of my improved apparatus is as follows: The pressman fillsthe mold with the proper quantity of glass, and places it in its seatunder the plunger in the usual manner. The plunger is then permitted todescend,

pressing the glass into the mold and forming the article. When thearticle is formed the plunger is raised, and the pressman, by depressingthe outer end of the lever, elevates the plunger passing through the bedof the press, which, in turn, elevates the plunger, follower, or bottomplate in the mold, and

raises the article from the cavity in the same,

and holds it in such position that it may be seized by a properinstrument in the hands of the pressman, and removed without invertingthe mold or moving the same from its place.

It will be seen that by this means the greater portion of the labor andtime ordinarily attendant upon the manipulation of the mold is saved,and that the wear and tear of the mold occasioned by such manipulationare obviated. Molds for forming articles of glass have heretofore beenconstructed with an opening through and recessed on their under side toreceive a plunger having a shoulder fitting in said recess, from theunder side of which shoulder projects a stem, so that, as the molds on acarriage travel over the bed of the press, said depending stem isbrought in contact with an inclined surface, and caused to ascendthrough the mold, and thus tend to lift the article out of the mold. Butas my invention diflers from such, I make no claim thereto; but

What I claim is- 1. The combination, with a mold for forming glassware,having an aperture and a recess, within which is located a plungerhaving a shoulder, of a plunger separate and distinct from the plungerin the mold, said plunger extending through an opening in the bed of thepress, and arranged to have a positive vertical action imparted to it bymechanism, substantially as described, operated by the pressman, wherebythe plunger in the mold is caused to move vertically therein forreleasing the article without inverting the mold.

2. In combination with the bed of the press, a vertical plunger, securedto a lever fulcrumed in a hanger below, and adapted to be elevated bymeans of said lever when operated by the pressman to elevate the plungerin the mold and release the article, substantially as and for thepurposes specified.

3. The combination, with the vertical plunger extending through the bedof the press and the lever by which it is actuated, of a strap andstirrup, whereby the lever may be operated by the foot of the workman toelevate the plunger and raise the plunger in the mold to release thearticle, substantially as specified.

4. The combination, with the plunger extending through the bed of thepress and the lever by which it is actuated, of a counterpoise, wherebythe lever and plunger are automatically depressed for the reception ofthe next succeeding mold, substantially as specified.

In testimony that I claim the foregoing I have hereunto set my hand andseal in the presence of the subscribing witnesses.

CHAS. K. BRYCE.

Witnesses:

JOHN MCKAIN, DAVID K. BRYCE.

